1351666653 has 8 divisors (see below), whose sum is σ = 1802517888. Its totient is φ = 900963264.

The previous prime is 1351666637. The next prime is 1351666697. The reversal of 1351666653 is 3566661531.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1351666653 - 2⁴ = 1351666637 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1351666153) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13500 + ... + 53717.

It is an arithmetic number, because the mean of its divisors is an integer number (225314736).

Almost surely, 2^1351666653 is an apocalyptic number.

It is an amenable number.

1351666653 is a deficient number, since it is larger than the sum of its proper divisors (450851235).

1351666653 is an equidigital number, since it uses as much as digits as its factorization.

1351666653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73923.

The product of its digits is 291600, while the sum is 42.

The square root of 1351666653 is about 36765.0194206395. The cubic root of 1351666653 is about 1105.6640775293.

The spelling of 1351666653 in words is "one billion, three hundred fifty-one million, six hundred sixty-six thousand, six hundred fifty-three".